Brick-machine.



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.3. ha n@ o Y PAT-ENTED JAPR. l1, 1905.

D. J. o. ARNOLD. BRICK MACHINE.

APPLICATION FILED SEPT 23, 1904 PATBNTBD APR.' 11, 1905.

D.J.0.ARNOLD.

BRICK MACHINE. APPLICATION FILED SE1-52.23, 1904:.

3 SHEETS-SHEET 2,

PATBNTED APR. 11, 1905. D. J. o. ARNoLD.

BRICK' MACHINE. APPLIOATIQNI'ILED SERT. 23, 1904.

3 SHEETS-SHEET 3.

UNITED STATES Patented April 11, 1905.

i PATENT OEEICE.

DANIEL J. C.. ARNOLD, OF NEW LONDON, OHIO, ASSIGNOR TO THEARNOLD-CREAGER COMPANY, OF NEW LONDON,

POR ATION.

OHIO, A OOR- BRICK-MACHINE.

SPECIFICATION forming'part of Letters Patent No. 787,019, dated April11, 1905. Application filed September 23, 1904:. lSerial No. 225,560.

To all whom t may concern.-

Be it known that I, DANIEL J. C. ARNOLD, a citizen of the United States,residing at New London, in the .county of Huron and State of Ohio, haveinvented certain new and useful Improvements in Brick-Machines, of which-the following is a speciiication.

My improvements relate to that class of brick-machines known as thehorizontal softmud brick-machine.

It consists generally of a horizontal pugmill, a chamber at the front ofthe delivery end, and a vertical inside press for forcing the temperedclay into the mold.

One of the objects of my invention is to pro-I vide the lower portion orface of the pressplunger with air-valves and hollow connectingrodsforming air-passages thereto, enabling upon the clay by reason of theundue escapev of clay, during the downward pressure, from under the`press-plunger into the chargingchamber, decreasing the supply of clay.

Anotherobject of my invention is to provide a yielding press-box :at thebottom of the pugging or charging chamber, acting' asa relief to allowthe surplus clay toescape into the pugging-chamber and to yield when themass of clay should contain stone or other foreign substances apt toinjure the molds when carried down by the plunger.

Another object of my invention is to provide the mold-actuatingmechanism and pitman for operating the press plunger with particularrelief mechanism preventing undue strains upon such parts.

The object of my invention is to provide a strong and more durablemachine and to improve the operation of the various parts thereof` aswill be fully explained in the accompanying drawings, forming a part ofthis specification, in which- .showing the same in released position.

Figure 1 is a side elevation of the machine, partly in section.v Fig. 2is an enlarged sectional elevationv of the chargingchamber press and themold-table underneath. Fig. 3 is a sectional view of .one of the rollersmounted at the front end of the mold-table upon which the `mold isrolled in the action of relieving the brick from the molds. Fig. iis asection on line m rc, Fig. 2. Fig. 5 is a top plan view of vthe frontendof the mold-carriage. Fig. 6 is a top plan view of the toggle-releasejoint of the pusher-rod for the mold-carriage. Fig.- 7 is a sectionalview, partly inV elevation, of the toggle-joint release mechanism of thepusher-rod of the carriage, Fig. 8 is a section on line 'w w, Fig. 2.Fig. 9 is a detailed sectional View of the press-plunger. Fig. 10 isafi-ont elevation of the connectinglrod for driving the press-plunger.Fig, llis an enlarged detailed view of one of the toggle-joint releasemembers. FigplQ is a detail view of the gear for driving the pug-millshaft, showing the position of cam for operating the connecting-rod andmechanism of the mold-carriage.

1 represents the bed sills on which the framework of the machine issupported.

2 represents the power-shaft journaled in brackets supported upon thesill.

3 represents a U-shaped pug-millof ordinary construction supported atthe rear end on the uprights Ltand at the front end by the side plates5, which form the side of the charging and press chamber. This presschamber is rectangular, the sides of the chamber being supported by thesill, the front plate 6 being rigidly secured to the sides.'

7 represents the pug-mill shaft extending through the pug-mill andcharging-chamber from `the front to the rear. This shaft is providedwith a series of pug-knives8 inside of the tempering or pug-mill chamber16. It is also provided with propeller-blades 9 to force the clay underthe plunger ofthe press, which will be hereinafter explained.

10 represents a stufling-box at the rear end of the png-mill to preventleakage.

11 represents the rear journal of the pugshaft, which is supported onbracket 12, rigidly connected to the rear end plate.

13 represents a main gear keyed to the pugshaft, meshing` with the gear1,4 on the powershaft 2.

B represents a main driving pulley on shaft 2.

15 represents the charging chamber in which work the propeller-bladesand the press mechanism.

16 represents the pug-mill chamber.

The front of the pug-mill shaft 7 journals in asleeve 17. 18 representsan enlarged hub fixed to said shaft and journaling in said sleeve. It isprovided with an eccentric extension 19, to which the crank-pin 2O itfixed. 25 represents a crank-wrist journaled upon the crankpin 20. A

21 represents parallel pitman-rods embraced bythe crank-wrist 25 andadapted to'be vertically adjusted thereon.

23 represents a series of notches on the inner side of the pitman-rods,respectively. 24 represents a keeper secured in either pair of saidnotches in securing the vertical engagement of the crank-wrist to thepitman-rods, so that the length of the stroke of the pitman may beadjusted by changing the position of the keeper. The upper end of saidpitmanrod passes through a cross-bar 22. Said crossbar is mounted upon aconnecting-rod 26, the inner end rigidly secured to a vertically-movingplunger 27, sliding in ways 28 on the outside of the front plate 6 of'the charging-chamber. In the preferred form of construction the parallelpitman-rods 21 pass through and are slidable in the cross-bar 22, butare fixed against this sliding movement to a pair of toggle-joint arms34 35.

36 represents a cross-bar to which the pitman-rods 21 are secured. Thiscross-bar is provided with ears to which the joint-arm 34 is pivoted. Across-bar 22 islikewise provided with ears to which the toggle-joint arm35 is pivoted. The inner ends of these toggle-arms are pivoted togetherand form a brace-joint and are held in alinement by the spring 37engaging against the cam projection n, integral with the toggle-arm 35.These arms are likewise provided with the iianges /L t, adapted ing nopower to the plunger 27.

to abut each other when alined and preventing the toggle-arms fromswingingto the inside beyond the dead-center. When undue strain,however, is applied through the crankpin, the spring 37 will yield. Thetogglelinks will open outwardly 4and the power raising the plunger 27 istripped at that point, when the pitman-rods will freely slide throughthe cross-bar 22 in its upper travel and apply- The object of thisconstruction is to prevent breaking of the dies 38 or some other part ofthe mechanism should a stone or some other`object be carried by thepress down upon the die.

30 represents a connecting-rod aiixed to the plunger 27 and projectedinto the top of the charging-chamber, upon which is mounted a yoke 31,to which yoke is affixed a pair of plunger-rods 32, carrying thepress-platen 33, which press-platen when in its lowest position is shownin F ig. 2. These plunger-rods are preferably made of hollow form, openat each end.

b represent braces secured to the yoke 31 at one end and to thepress-platen 33 at the other end, adding rigidity tothe press-platen andits connecting mechanism.

c represents a valve fixed to the lower face of the press-platen 33.

By this construction air is admitted on the top of the mass of clay, andwhen the plunger or press-platen raises the air is not drawn through theclay in such upward action. By this construction it is enabled to make amore perfect brick. The press-platen is provided with a flange (lextending downwardly along the rearward edge thereof', this constructionenabling the clay to beheld under the platen, preventing an unevenpressure upon the clay by reason of the undue escape of clay in thedownward pressure of the platen. Yln order that the clay may be held upagainst the die until the molds have been actually filled hy thepress-plunger and yet allow the surplus clay to escape, l provide arearwardly-moving sideof the press-box 39. This side of' the press-boxis supported on the bottom of the charging-chamber and held in positionby rods 4() and the guides e, attached to said sides. Said rods extendthrough the rear wall ofl the charging-chamber and are surrounded byretractile springs 41, seating in housing-boxes 42 and bearingagainstthe spring-seats 43, which are pinned to the shafts and are movedwith them to compress the springs which normally hold the sides of thepress-box in position, but yield to undue strain, said rods operating onthe same principle as plunger-rods. .lhis method having a' yielding sideto a press-box moving inwardly from the platen is :ulvantageousoverother forms of' yielding mechanism. lhe said plunger forming theside of the pressboX moving inward under the strains to escape thesurplus clay, as soon as the platen raises they are immediately movedbackward, carrying the surplus clay back into position for fillingmolds, thus keeping the mold pressbox in proper position for receivingthe pressplaten and cooperating therewith. Of course instead of springsweights may be employed to return lthe plunger to the side of the hexand are the equivalent of springs.

The mold-table and the mechanism for operating the molds are constructedas follows: 44 represents a mold-supporting table. lt is supportedcentrally by thestep 46, which is pivotally adjusted by the screws 45,operated by handle a, on which the central stem 47 of the mold-tablerests. The mold when pushed IOO IIO

-out is slid upon a pair of rollers 48, which are supported upon anadjustable shaft 49, which is held in .position by the set-screw 50, soas to adjust the relative heights of the supporting-rolls, which aremade hollow, so as to form an oil-box fixed to run around the shaft. Themolds are pushed off of the table by means ofthe following devices: 55represents the mold-carriage, the front end of which engages the rearside of the mold. The pusherhead is supported upon friction-rollers 54,which project laterally and travel in grooves or ways E formed in thesides of the machine. 56 represents a guard or finger for engaging overthe ends of the mold. This mold-carriage is connected to a sectionalpitman-rod 57 61, which extends rearwardly and is positively operatedforward and backward by the following means: 58 represents africtionroller on the rear end of the connecting-rod or pitman andnormally rests in the path of cam 59, attached to the main gear-wheel onthe pug-mill shaft 7. It is necessary to reciprocate the mold-carriageforward when the press-platen is rising and immediately retracts thesame, so that another mold may be placed on the mold-table before thedescent of the press-platen. To accomplish this result and to operatethe mold -carriage and ymechanism positively, the cam 59 is placed insuch relation to the crank on the pitmanshaft that the cam 59 begins topush the roller 58 forward immediately after the crank-pin commences tomo've vertically to raise the press-platen, and inorder that themold-carriage may be Vquickly withdrawn during the plunger ascent thereverse and retracting cam 59 commences at the termination of cam 59,

engaging o'ver the roller 58 and drawing it.

completely backward during the travel of the gear in that part of therevolution which completes the upward movement of the crank 20, so thata positive forward and backward movement of the mold-carriage is madeduring the partial revolution as the crank-pin 2O is being raisedupward.

In order to prevent breaking of parts in case any stone should engage inthe mold and die, to prevent the free outward movement of thecharge-mold and causing a breakage, a yielding mechanism is provided inthe pushrod connection, as shown in Figs. 1, 6, and 7, in which thecarriage-rod or sectional pitman is made of two parts jointed togetheras follows: 61 represents the rear and positive section of the pitman orconnecting-rod, the connecting-rod proper being slidable in the hollowsection 62 in the line of its axis, as shown in Fig. 7. 68 64 representa pair of knuckle-jointed links which are held approximately in astraight line by springs 65. As

shown in the drawings, link 64 is hinged to a collar on the nut of theconnecting-rod and is fixed longitudinally by said nut on the shaft.

Link 63 is attached to the sectional sleeveshaft 61, to which said linkin pivoted. The springs 65 rest upon the cam-point of link 64 when theyare straightened out, occupying the Kposition shown in Fig. 1, as thethree joints of links are slightly out of line. Undue strain upon theshaft 57 will cause the spring to yield, the links rising into theposition shown in Fig. 7. The section 57 of the pitman-rod telescopesand moves forward in the sleeve-section 61. As soon as the linkscommence to rise the forward motion on the actuating-roller 58 is alltaken up by the telescoping of the connecting-rod section and is notimparted to the mold. ABy this method the connecting-rod is straight atall times and is not subjected to torsional strain by the telescoping ofthe connecting-rod, one section moving within the other, always being inright line, and the motion of shortening the length of theconnecting-rod is taken up on the pivots of the links themselves.

represents a bevel gear fixed to the shaft 2.

71 represents a journal-bracket fixed to the sills 1 and uprightsupports 4, two being employed, in which a shaft 7 2 is journaled. 7 3`represents a .bevel gear in mesh with gear 70 and receiving powertherefrom. By this construction auxiliary mechanism can be driven, suchas sandingmachine used in connection with the molds, &c.

Having described my invention, I' claim- 1. In a brick-machine employinga horizontal pug-mill, a vertical charging-chamber, the pug-mill shaftextending through the charging-chamber, supported in a sleeve bearing inthe front plate of the machine, an enlarged hub fixed to the end of saidshaft journaling in said sleeve, a crank-pin mounted in said enlargedhub, a pitman journaling on and driven by said crank, a verticallymoving plunger mounted in ways supported on the frame, astud-shaftconnected to said plunger, projecting outwardly and forming a journalfor the pitman, a second shaft connected to said plunger and projectinginwardly over the Vcharging-chamber, a rod rigidly connected to thepress-platen at the lower end, and supported on said inwardly projectingshaft, whereby the said pitman drives the said plunger and platen rodvertically in unison, substantially as described.

2. In a brick-machine employing a horizontal pug-mill and shaft, acharging-chamber and a press-platen, the mechanism for operating thepress-platen, consisting of acrank mounted on the front end of thepug-mill, a vertically-moving plunger journ'aled in ways mounted on theframe, a stud-shaft connected to said plunger and projecting outwardlyabove the crank-pin, and a pitman connecting said stud and crank, asecond stud-shaft mounted on said plunger and projecting inwardly overthe charging-chamber, a rod rigidly con- IOO IOS

IIO

nected to the platen and journaled on said inwardly-projectedstud-shaft, substantially asl described.

3. In a brick-machine employing a vertically-moving press-platen havingdirect connection to the crank on the pug-mill shaft by pitman andplunger connection, said pitman being held in operative position by atogglejoint and spring, which are Vtripped by undue strain to allow saidpitman to move idly.

4. In a brick-machine employing a vertically-moving press-platen, acharging-chamber, a press-box located above the die, one side of whichis supported upon plunger-rods held in position by a yielding support,whereby said press-box moves horizontally under the strain of thepress-platen to receive surplus clay during the platen descent, andplunger-rods supported and carrying said yielding sides, and means forautomatically returning the plunger-rods to normal position when theplaten is retracted.

' 5. In a brick-press employing a pug-mill shaft, a vertical pressinside of the chargingchamber, adie at the mouthof said chamber, amold-table supporting molds under the dies of a mold push-rod operatedby a connectingrod, the rear portion of which is slidably supported in ajournal, an engaging device at the rear end of said rod, reverse-actingcams mounted on the rim of the main gear on the pug-mill shaft, theparts being so disposed that the said cams reciprocate the connectingrodforward and backward, during the' part revolution of said pug-mill gear,substantially as described.

6. In abrick-maehine of the class described, employing a mold-carriageand connectingrod operated by reverse-driving cams mounted on thepug-mill gear, the faces of which are revolved in a plane intersectingan cngaging device mounted on the rear end ol a connecting-rod, saidcolmecting-rod being made of two sections, one slidable within theother, same being locked together by a toggle-joint and springconnection, whereby said toggle-joints will be tripped by undue strains,and one section of the coimecting-rods will slide within the otherwithout operating the molds.

7. In combination with a vertically-charging press of a brick-machine,operated by the pug-mill shaft, the mechanism for reciprocating themold-carriage, consisting of a main driving-gear on the pug-mill shaft,reverse driving-cams mounted-on the rim of said gear, a connecting-rodfixed to the mold-carriage at the front end and slidably journalcd in asupport at the rear end thereof, a frictionroller journaled on the rearend of said connecting-rod, with its peripheral face athwart the pathsof travel of the faces of the drivingcams, the parts being so disposedthat both o f said cams actnate the pitman-rod and molds positively inboth directions, during part revolution of said main gear, substantiallyas described.

8. In a brick-press of the type shown in combination with thepress-platen of a hollow plunger-rod passing through the said platen,and a valve to close said hollow rod, substantially as described.

In testimony whereof I have hereunto set my hand.

DANIEL J. C. ARNOLD.

Witnesses:

OLIVER B. KAIsnn, Liao ODoNNnLL.

